Occurrence and histopathogenesis of a didymozoid trematode ( Gonapodasmiusepinepheli) in pond-reared orange-spotted grouper, Epinephelus coioides

A didymozoid trematode encapsulated in the gills of orange-spotted grouper, Epinephelus coioides Hamilton, was observed in October 1997 and September 1999 among pond-reared fish in the Philippines. Capsule prevalence was 33% and 18% and mean intensity 2 and 1, respectively. The opaque-white and yell...

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Bibliographic Details
Published in:Aquaculture 2001-10, Vol.201 (3), p.211-217
Main Authors: Cruz-Lacierda, Erlinda R, Lester, R.J.G, Eusebio, Perla S, Marcial, Helen S, Pedrajas, Sharon Ann G
Format: Article
Language:English
Subjects:
Animal aquaculture
Animal productions
Aquaculture
Biological and medical sciences
Didymozoid
Didymozoidae
Epinephelus coioides
Fish
Fundamental and applied biological sciences. Psychology
Gonapodasmius epinepheli
Grouper
Marine
Parasites
Pisciculture
Trematode
Vertebrate aquaculture
Worms
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Summary:A didymozoid trematode encapsulated in the gills of orange-spotted grouper, Epinephelus coioides Hamilton, was observed in October 1997 and September 1999 among pond-reared fish in the Philippines. Capsule prevalence was 33% and 18% and mean intensity 2 and 1, respectively. The opaque-white and yellowish capsules were found only on the first gill arch and were attached lengthwise along the posterior surface of the primary gill filaments. When the capsules were opened, long thread-like worms were revealed, which were identified as Gonapodasmius epinepheli Abdul-Salam, Sreelatha and Farah. The parasites were encapsulated between the basement membrane of the epithelium and the efferent artery of the gill filament. The response of the host included mild hyperplasia of the interlamellar epithelium and an increase in the number of mucous cells.
ISSN:0044-8486
1873-5622
DOI:10.1016/S0044-8486(01)00668-8